Air pump



FIG. 1 is a perspective view of an air pump, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is an enlarged view according to Area 7 circumscribed within FIG.2.

In the drawings, the broken lines represent portions of an air pump andform no part of the claimed design; the two-dot chain lines, that arecircumscribing the area noted as 7 in FIGS. 2 and 7 are depicting aboundary of the enlarged portion, and form no part of the claimeddesign.

CLAIM The ornamental design for an air pump, as shown and described.